FreeBSD/Linux Kernel Cross Reference
sys/dev/xe/if_xe.c
1 /*-
2 * Copyright (c) 1998, 1999, 2003 Scott Mitchell
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26 /*-
27 * Portions of this software were derived from Werner Koch's xirc2ps driver
28 * for Linux under the terms of the following license (from v1.30 of the
29 * xirc2ps driver):
30 *
31 * Copyright (c) 1997 by Werner Koch (dd9jn)
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, and the entire permission notice in its entirety,
38 * including the disclaimer of warranties.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 * 3. The name of the author may not be used to endorse or promote
43 * products derived from this software without specific prior
44 * written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
47 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
49 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
50 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
51 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
52 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
54 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
55 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
56 * OF THE POSSIBILITY OF SUCH DAMAGE.
57 */
58
59 #include <sys/cdefs.h>
60 __FBSDID("$FreeBSD: releng/11.2/sys/dev/xe/if_xe.c 331722 2018-03-29 02:50:57Z eadler $");
61
62 /*
63 * FreeBSD device driver for Xircom CreditCard PCMCIA Ethernet adapters. The
64 * following cards are currently known to work with the driver:
65 * Xircom CreditCard 10/100 (CE3)
66 * Xircom CreditCard Ethernet + Modem 28 (CEM28)
67 * Xircom CreditCard Ethernet 10/100 + Modem 56 (CEM56)
68 * Xircom RealPort Ethernet 10
69 * Xircom RealPort Ethernet 10/100
70 * Xircom RealPort Ethernet 10/100 + Modem 56 (REM56, REM56G)
71 * Intel EtherExpress Pro/100 PC Card Mobile Adapter 16 (Pro/100 M16A)
72 * Compaq Netelligent 10/100 PC Card (CPQ-10/100)
73 *
74 * Some other cards *should* work, but support for them is either broken or in
75 * an unknown state at the moment. I'm always interested in hearing from
76 * people who own any of these cards:
77 * Xircom CreditCard 10Base-T (PS-CE2-10)
78 * Xircom CreditCard Ethernet + ModemII (CEM2)
79 * Xircom CEM28 and CEM33 Ethernet/Modem cards (may be variants of CEM2?)
80 *
81 * Thanks to all who assisted with the development and testing of the driver,
82 * especially: Werner Koch, Duke Kamstra, Duncan Barclay, Jason George, Dru
83 * Nelson, Mike Kephart, Bill Rainey and Douglas Rand. Apologies if I've left
84 * out anyone who deserves a mention here.
85 *
86 * Special thanks to Ade Lovett for both hosting the mailing list and doing
87 * the CEM56/REM56 support code; and the FreeBSD UK Users' Group for hosting
88 * the web pages.
89 *
90 * Author email: <scott@uk.freebsd.org>
91 * Driver web page: http://ukug.uk.freebsd.org/~scott/xe_drv/
92 */
93
94
95 #include <sys/param.h>
96 #include <sys/cdefs.h>
97 #include <sys/errno.h>
98 #include <sys/kernel.h>
99 #include <sys/malloc.h>
100 #include <sys/mbuf.h>
101 #include <sys/socket.h>
102 #include <sys/sockio.h>
103 #include <sys/systm.h>
104 #include <sys/uio.h>
105 #include <sys/sysctl.h>
106
107 #include <sys/module.h>
108 #include <sys/bus.h>
109
110 #include <machine/bus.h>
111 #include <machine/resource.h>
112 #include <sys/rman.h>
113
114 #include <net/ethernet.h>
115 #include <net/if.h>
116 #include <net/if_var.h>
117 #include <net/if_arp.h>
118 #include <net/if_dl.h>
119 #include <net/if_media.h>
120 #include <net/if_mib.h>
121 #include <net/bpf.h>
122 #include <net/if_types.h>
123
124 #include <dev/xe/if_xereg.h>
125 #include <dev/xe/if_xevar.h>
126
127 /*
128 * MII command structure
129 */
130 struct xe_mii_frame {
131 uint8_t mii_stdelim;
132 uint8_t mii_opcode;
133 uint8_t mii_phyaddr;
134 uint8_t mii_regaddr;
135 uint8_t mii_turnaround;
136 uint16_t mii_data;
137 };
138
139 /*
140 * Media autonegotiation progress constants
141 */
142 #define XE_AUTONEG_NONE 0 /* No autonegotiation in progress */
143 #define XE_AUTONEG_WAITING 1 /* Waiting for transmitter to go idle */
144 #define XE_AUTONEG_STARTED 2 /* Waiting for autonegotiation to complete */
145 #define XE_AUTONEG_100TX 3 /* Trying to force 100baseTX link */
146 #define XE_AUTONEG_FAIL 4 /* Autonegotiation failed */
147
148 /*
149 * Prototypes start here
150 */
151 static void xe_init(void *xscp);
152 static void xe_init_locked(struct xe_softc *scp);
153 static void xe_start(struct ifnet *ifp);
154 static void xe_start_locked(struct ifnet *ifp);
155 static int xe_ioctl(struct ifnet *ifp, u_long command, caddr_t data);
156 static void xe_watchdog(void *arg);
157 static void xe_intr(void *xscp);
158 static void xe_txintr(struct xe_softc *scp, uint8_t txst1);
159 static void xe_macintr(struct xe_softc *scp, uint8_t rst0, uint8_t txst0,
160 uint8_t txst1);
161 static void xe_rxintr(struct xe_softc *scp, uint8_t rst0);
162 static int xe_media_change(struct ifnet *ifp);
163 static void xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp);
164 static void xe_setmedia(void *arg);
165 static void xe_reset(struct xe_softc *scp);
166 static void xe_enable_intr(struct xe_softc *scp);
167 static void xe_disable_intr(struct xe_softc *scp);
168 static void xe_set_multicast(struct xe_softc *scp);
169 static void xe_set_addr(struct xe_softc *scp, uint8_t* addr, unsigned idx);
170 static void xe_mchash(struct xe_softc *scp, const uint8_t *addr);
171 static int xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp);
172
173 /*
174 * MII functions
175 */
176 static void xe_mii_sync(struct xe_softc *scp);
177 static int xe_mii_init(struct xe_softc *scp);
178 static void xe_mii_send(struct xe_softc *scp, uint32_t bits, int cnt);
179 static int xe_mii_readreg(struct xe_softc *scp,
180 struct xe_mii_frame *frame);
181 static int xe_mii_writereg(struct xe_softc *scp,
182 struct xe_mii_frame *frame);
183 static uint16_t xe_phy_readreg(struct xe_softc *scp, uint16_t reg);
184 static void xe_phy_writereg(struct xe_softc *scp, uint16_t reg,
185 uint16_t data);
186
187 /*
188 * Debugging functions
189 */
190 static void xe_mii_dump(struct xe_softc *scp);
191 #if 0
192 static void xe_reg_dump(struct xe_softc *scp);
193 #endif
194
195 /*
196 * Debug logging levels - set with hw.xe.debug sysctl
197 * 0 = None
198 * 1 = More hardware details, probe/attach progress
199 * 2 = Most function calls, ioctls and media selection progress
200 * 3 = Everything - interrupts, packets in/out and multicast address setup
201 */
202 #define XE_DEBUG
203 #ifdef XE_DEBUG
204
205 /* sysctl vars */
206 static SYSCTL_NODE(_hw, OID_AUTO, xe, CTLFLAG_RD, 0, "if_xe parameters");
207
208 int xe_debug = 0;
209 SYSCTL_INT(_hw_xe, OID_AUTO, debug, CTLFLAG_RW, &xe_debug, 0,
210 "if_xe debug level");
211
212 #define DEVPRINTF(level, arg) if (xe_debug >= (level)) device_printf arg
213 #define DPRINTF(level, arg) if (xe_debug >= (level)) printf arg
214 #define XE_MII_DUMP(scp) if (xe_debug >= 3) xe_mii_dump(scp)
215 #if 0
216 #define XE_REG_DUMP(scp) if (xe_debug >= 3) xe_reg_dump(scp)
217 #endif
218 #else
219 #define DEVPRINTF(level, arg)
220 #define DPRINTF(level, arg)
221 #define XE_MII_DUMP(scp)
222 #if 0
223 #define XE_REG_DUMP(scp)
224 #endif
225 #endif
226
227 /*
228 * Attach a device.
229 */
230 int
231 xe_attach(device_t dev)
232 {
233 struct xe_softc *scp = device_get_softc(dev);
234 int err;
235
236 DEVPRINTF(2, (dev, "attach\n"));
237
238 /* Initialise stuff... */
239 scp->dev = dev;
240 scp->ifp = if_alloc(IFT_ETHER);
241 if (scp->ifp == NULL)
242 return (ENOSPC);
243 scp->ifm = &scp->ifmedia;
244 scp->autoneg_status = XE_AUTONEG_NONE;
245 mtx_init(&scp->lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
246 MTX_DEF);
247 callout_init_mtx(&scp->wdog_timer, &scp->lock, 0);
248
249 /* Initialise the ifnet structure */
250 scp->ifp->if_softc = scp;
251 if_initname(scp->ifp, device_get_name(dev), device_get_unit(dev));
252 scp->ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
253 scp->ifp->if_linkmib = &scp->mibdata;
254 scp->ifp->if_linkmiblen = sizeof(scp->mibdata);
255 scp->ifp->if_start = xe_start;
256 scp->ifp->if_ioctl = xe_ioctl;
257 scp->ifp->if_init = xe_init;
258 scp->ifp->if_baudrate = 100000000;
259 IFQ_SET_MAXLEN(&scp->ifp->if_snd, ifqmaxlen);
260
261 /* Initialise the ifmedia structure */
262 ifmedia_init(scp->ifm, 0, xe_media_change, xe_media_status);
263 callout_init_mtx(&scp->media_timer, &scp->lock, 0);
264
265 /* Add supported media types */
266 if (scp->mohawk) {
267 ifmedia_add(scp->ifm, IFM_ETHER|IFM_100_TX, 0, NULL);
268 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
269 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
270 }
271 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_T, 0, NULL);
272 if (scp->ce2)
273 ifmedia_add(scp->ifm, IFM_ETHER|IFM_10_2, 0, NULL);
274 ifmedia_add(scp->ifm, IFM_ETHER|IFM_AUTO, 0, NULL);
275
276 /* Default is to autoselect best supported media type */
277 ifmedia_set(scp->ifm, IFM_ETHER|IFM_AUTO);
278
279 /* Get the hardware into a known state */
280 XE_LOCK(scp);
281 xe_reset(scp);
282 XE_UNLOCK(scp);
283
284 /* Get hardware version numbers */
285 XE_SELECT_PAGE(4);
286 scp->version = XE_INB(XE_BOV);
287 if (scp->mohawk)
288 scp->srev = (XE_INB(XE_BOV) & 0x70) >> 4;
289 else
290 scp->srev = (XE_INB(XE_BOV) & 0x30) >> 4;
291
292 /* Print some useful information */
293 device_printf(dev, "version 0x%02x/0x%02x%s%s\n", scp->version,
294 scp->srev, scp->mohawk ? ", 100Mbps capable" : "",
295 scp->modem ? ", with modem" : "");
296 if (scp->mohawk) {
297 XE_SELECT_PAGE(0x10);
298 DEVPRINTF(1, (dev,
299 "DingoID=0x%04x, RevisionID=0x%04x, VendorID=0x%04x\n",
300 XE_INW(XE_DINGOID), XE_INW(XE_RevID), XE_INW(XE_VendorID)));
301 }
302 if (scp->ce2) {
303 XE_SELECT_PAGE(0x45);
304 DEVPRINTF(1, (dev, "CE2 version = 0x%02x\n", XE_INB(XE_REV)));
305 }
306
307 /* Attach the interface */
308 ether_ifattach(scp->ifp, scp->enaddr);
309
310 err = bus_setup_intr(dev, scp->irq_res, INTR_TYPE_NET | INTR_MPSAFE,
311 NULL, xe_intr, scp, &scp->intrhand);
312 if (err) {
313 ether_ifdetach(scp->ifp);
314 mtx_destroy(&scp->lock);
315 return (err);
316 }
317
318 /* Done */
319 return (0);
320 }
321
322 /*
323 * Complete hardware intitialisation and enable output. Exits without doing
324 * anything if there's no address assigned to the card, or if media selection
325 * is in progress (the latter implies we've already run this function).
326 */
327 static void
328 xe_init(void *xscp)
329 {
330 struct xe_softc *scp = xscp;
331
332 XE_LOCK(scp);
333 xe_init_locked(scp);
334 XE_UNLOCK(scp);
335 }
336
337 static void
338 xe_init_locked(struct xe_softc *scp)
339 {
340 unsigned i;
341
342 if (scp->autoneg_status != XE_AUTONEG_NONE)
343 return;
344
345 DEVPRINTF(2, (scp->dev, "init\n"));
346
347 /* Reset transmitter flags */
348 scp->tx_queued = 0;
349 scp->tx_tpr = 0;
350 scp->tx_timeouts = 0;
351 scp->tx_thres = 64;
352 scp->tx_min = ETHER_MIN_LEN - ETHER_CRC_LEN;
353 scp->tx_timeout = 0;
354
355 /* Soft reset the card */
356 XE_SELECT_PAGE(0);
357 XE_OUTB(XE_CR, XE_CR_SOFT_RESET);
358 DELAY(40000);
359 XE_OUTB(XE_CR, 0);
360 DELAY(40000);
361
362 if (scp->mohawk) {
363 /*
364 * set GP1 and GP2 as outputs (bits 2 & 3)
365 * set GP1 low to power on the ML6692 (bit 0)
366 * set GP2 high to power on the 10Mhz chip (bit 1)
367 */
368 XE_SELECT_PAGE(4);
369 XE_OUTB(XE_GPR0, XE_GPR0_GP2_SELECT | XE_GPR0_GP1_SELECT |
370 XE_GPR0_GP2_OUT);
371 }
372
373 /* Shut off interrupts */
374 xe_disable_intr(scp);
375
376 /* Wait for everything to wake up */
377 DELAY(500000);
378
379 /* Check for PHY */
380 if (scp->mohawk)
381 scp->phy_ok = xe_mii_init(scp);
382
383 /* Disable 'source insertion' (not sure what that means) */
384 XE_SELECT_PAGE(0x42);
385 XE_OUTB(XE_SWC0, XE_SWC0_NO_SRC_INSERT);
386
387 /* Set 8K/24K Tx/Rx buffer split */
388 if (scp->srev != 1) {
389 XE_SELECT_PAGE(2);
390 XE_OUTW(XE_RBS, 0x2000);
391 }
392
393 /* Enable early transmit mode on Mohawk/Dingo */
394 if (scp->mohawk) {
395 XE_SELECT_PAGE(0x03);
396 XE_OUTW(XE_TPT, scp->tx_thres);
397 XE_SELECT_PAGE(0x01);
398 XE_OUTB(XE_ECR, XE_INB(XE_ECR) | XE_ECR_EARLY_TX);
399 }
400
401 /* Put MAC address in first 'individual address' register */
402 XE_SELECT_PAGE(0x50);
403 for (i = 0; i < ETHER_ADDR_LEN; i++)
404 XE_OUTB(0x08 + i, IF_LLADDR(scp->ifp)[scp->mohawk ? 5 - i : i]);
405
406 /* Set up multicast addresses */
407 xe_set_multicast(scp);
408
409 /* Fix the receive data offset -- reset can leave it off-by-one */
410 XE_SELECT_PAGE(0);
411 XE_OUTW(XE_DO, 0x2000);
412
413 /* Set interrupt masks */
414 XE_SELECT_PAGE(1);
415 XE_OUTB(XE_IMR0, XE_IMR0_TX_PACKET | XE_IMR0_MAC_INTR |
416 XE_IMR0_RX_PACKET);
417
418 /* Set MAC interrupt masks */
419 XE_SELECT_PAGE(0x40);
420 XE_OUTB(XE_RX0Msk,
421 ~(XE_RX0M_RX_OVERRUN | XE_RX0M_CRC_ERROR | XE_RX0M_ALIGN_ERROR |
422 XE_RX0M_LONG_PACKET));
423 XE_OUTB(XE_TX0Msk,
424 ~(XE_TX0M_SQE_FAIL | XE_TX0M_LATE_COLLISION | XE_TX0M_TX_UNDERRUN |
425 XE_TX0M_16_COLLISIONS | XE_TX0M_NO_CARRIER));
426
427 /* Clear MAC status registers */
428 XE_SELECT_PAGE(0x40);
429 XE_OUTB(XE_RST0, 0x00);
430 XE_OUTB(XE_TXST0, 0x00);
431
432 /* Enable receiver and put MAC online */
433 XE_SELECT_PAGE(0x40);
434 XE_OUTB(XE_CMD0, XE_CMD0_RX_ENABLE|XE_CMD0_ONLINE);
435
436 /* Set up IMR, enable interrupts */
437 xe_enable_intr(scp);
438
439 /* Start media selection */
440 xe_setmedia(scp);
441
442 /* Enable output */
443 scp->ifp->if_drv_flags |= IFF_DRV_RUNNING;
444 scp->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
445 callout_reset(&scp->wdog_timer, hz, xe_watchdog, scp);
446 }
447
448 /*
449 * Start output on interface. Should be called at splimp() priority. Check
450 * that the output is idle (ie, IFF_DRV_OACTIVE is not set) before calling this
451 * function. If media selection is in progress we set IFF_DRV_OACTIVE ourselves
452 * and return immediately.
453 */
454 static void
455 xe_start(struct ifnet *ifp)
456 {
457 struct xe_softc *scp = ifp->if_softc;
458
459 XE_LOCK(scp);
460 xe_start_locked(ifp);
461 XE_UNLOCK(scp);
462 }
463
464 static void
465 xe_start_locked(struct ifnet *ifp)
466 {
467 struct xe_softc *scp = ifp->if_softc;
468 struct mbuf *mbp;
469
470 if (scp->autoneg_status != XE_AUTONEG_NONE) {
471 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
472 return;
473 }
474
475 DEVPRINTF(3, (scp->dev, "start\n"));
476
477 /*
478 * Loop while there are packets to be sent, and space to send
479 * them.
480 */
481 for (;;) {
482 /* Suck a packet off the send queue */
483 IF_DEQUEUE(&ifp->if_snd, mbp);
484
485 if (mbp == NULL) {
486 /*
487 * We are using the !OACTIVE flag to indicate
488 * to the outside world that we can accept an
489 * additional packet rather than that the
490 * transmitter is _actually_ active. Indeed,
491 * the transmitter may be active, but if we
492 * haven't filled all the buffers with data
493 * then we still want to accept more.
494 */
495 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
496 return;
497 }
498
499 if (xe_pio_write_packet(scp, mbp) != 0) {
500 /* Push the packet back onto the queue */
501 IF_PREPEND(&ifp->if_snd, mbp);
502 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
503 return;
504 }
505
506 /* Tap off here if there is a bpf listener */
507 BPF_MTAP(ifp, mbp);
508
509 /* In case we don't hear from the card again... */
510 scp->tx_timeout = 5;
511 scp->tx_queued++;
512
513 m_freem(mbp);
514 }
515 }
516
517 /*
518 * Process an ioctl request. Adapted from the ed driver.
519 */
520 static int
521 xe_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
522 {
523 struct xe_softc *scp;
524 int error;
525
526 scp = ifp->if_softc;
527 error = 0;
528
529 switch (command) {
530 case SIOCSIFFLAGS:
531 DEVPRINTF(2, (scp->dev, "ioctl: SIOCSIFFLAGS: 0x%04x\n",
532 ifp->if_flags));
533 /*
534 * If the interface is marked up and stopped, then
535 * start it. If it is marked down and running, then
536 * stop it.
537 */
538 XE_LOCK(scp);
539 if (ifp->if_flags & IFF_UP) {
540 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
541 xe_reset(scp);
542 xe_init_locked(scp);
543 }
544 } else {
545 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
546 xe_stop(scp);
547 }
548
549 /* handle changes to PROMISC/ALLMULTI flags */
550 xe_set_multicast(scp);
551 XE_UNLOCK(scp);
552 error = 0;
553 break;
554 case SIOCADDMULTI:
555 case SIOCDELMULTI:
556 DEVPRINTF(2, (scp->dev, "ioctl: SIOC{ADD,DEL}MULTI\n"));
557 /*
558 * Multicast list has (maybe) changed; set the
559 * hardware filters accordingly.
560 */
561 XE_LOCK(scp);
562 xe_set_multicast(scp);
563 XE_UNLOCK(scp);
564 error = 0;
565 break;
566 case SIOCSIFMEDIA:
567 case SIOCGIFMEDIA:
568 DEVPRINTF(3, (scp->dev, "ioctl: bounce to ifmedia_ioctl\n"));
569 /*
570 * Someone wants to get/set media options.
571 */
572 error = ifmedia_ioctl(ifp, (struct ifreq *)data, &scp->ifmedia,
573 command);
574 break;
575 default:
576 DEVPRINTF(3, (scp->dev, "ioctl: bounce to ether_ioctl\n"));
577 error = ether_ioctl(ifp, command, data);
578 }
579
580 return (error);
581 }
582
583 /*
584 * Card interrupt handler.
585 *
586 * This function is probably more complicated than it needs to be, as it
587 * attempts to deal with the case where multiple packets get sent between
588 * interrupts. This is especially annoying when working out the collision
589 * stats. Not sure whether this case ever really happens or not (maybe on a
590 * slow/heavily loaded machine?) so it's probably best to leave this like it
591 * is.
592 *
593 * Note that the crappy PIO used to get packets on and off the card means that
594 * you will spend a lot of time in this routine -- I can get my P150 to spend
595 * 90% of its time servicing interrupts if I really hammer the network. Could
596 * fix this, but then you'd start dropping/losing packets. The moral of this
597 * story? If you want good network performance _and_ some cycles left over to
598 * get your work done, don't buy a Xircom card. Or convince them to tell me
599 * how to do memory-mapped I/O :)
600 */
601 static void
602 xe_txintr(struct xe_softc *scp, uint8_t txst1)
603 {
604 struct ifnet *ifp;
605 uint8_t tpr, sent, coll;
606
607 ifp = scp->ifp;
608
609 /* Update packet count, accounting for rollover */
610 tpr = XE_INB(XE_TPR);
611 sent = -scp->tx_tpr + tpr;
612
613 /* Update statistics if we actually sent anything */
614 if (sent > 0) {
615 coll = txst1 & XE_TXST1_RETRY_COUNT;
616 scp->tx_tpr = tpr;
617 scp->tx_queued -= sent;
618 if_inc_counter(ifp, IFCOUNTER_OPACKETS, sent);
619 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, coll);
620
621 /*
622 * According to the Xircom manual, Dingo will
623 * sometimes manage to transmit a packet with
624 * triggering an interrupt. If this happens, we have
625 * sent > 1 and the collision count only reflects
626 * collisions on the last packet sent (the one that
627 * triggered the interrupt). Collision stats might
628 * therefore be a bit low, but there doesn't seem to
629 * be anything we can do about that.
630 */
631 switch (coll) {
632 case 0:
633 break;
634 case 1:
635 scp->mibdata.dot3StatsSingleCollisionFrames++;
636 scp->mibdata.dot3StatsCollFrequencies[0]++;
637 break;
638 default:
639 scp->mibdata.dot3StatsMultipleCollisionFrames++;
640 scp->mibdata.dot3StatsCollFrequencies[coll-1]++;
641 }
642 }
643 scp->tx_timeout = 0;
644 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
645 }
646
647 /* Handle most MAC interrupts */
648 static void
649 xe_macintr(struct xe_softc *scp, uint8_t rst0, uint8_t txst0, uint8_t txst1)
650 {
651 struct ifnet *ifp;
652
653 ifp = scp->ifp;
654
655 #if 0
656 /* Carrier sense lost -- only in 10Mbit HDX mode */
657 if (txst0 & XE_TXST0_NO_CARRIER || !(txst1 & XE_TXST1_LINK_STATUS)) {
658 /* XXX - Need to update media status here */
659 device_printf(scp->dev, "no carrier\n");
660 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
661 scp->mibdata.dot3StatsCarrierSenseErrors++;
662 }
663 #endif
664 /* Excessive collisions -- try sending again */
665 if (txst0 & XE_TXST0_16_COLLISIONS) {
666 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 16);
667 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
668 scp->mibdata.dot3StatsExcessiveCollisions++;
669 scp->mibdata.dot3StatsMultipleCollisionFrames++;
670 scp->mibdata.dot3StatsCollFrequencies[15]++;
671 XE_OUTB(XE_CR, XE_CR_RESTART_TX);
672 }
673
674 /* Transmit underrun -- increase early transmit threshold */
675 if (txst0 & XE_TXST0_TX_UNDERRUN && scp->mohawk) {
676 DEVPRINTF(1, (scp->dev, "transmit underrun"));
677 if (scp->tx_thres < ETHER_MAX_LEN) {
678 if ((scp->tx_thres += 64) > ETHER_MAX_LEN)
679 scp->tx_thres = ETHER_MAX_LEN;
680 DPRINTF(1, (": increasing transmit threshold to %u",
681 scp->tx_thres));
682 XE_SELECT_PAGE(0x3);
683 XE_OUTW(XE_TPT, scp->tx_thres);
684 XE_SELECT_PAGE(0x0);
685 }
686 DPRINTF(1, ("\n"));
687 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
688 scp->mibdata.dot3StatsInternalMacTransmitErrors++;
689 }
690
691 /* Late collision -- just complain about it */
692 if (txst0 & XE_TXST0_LATE_COLLISION) {
693 device_printf(scp->dev, "late collision\n");
694 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
695 scp->mibdata.dot3StatsLateCollisions++;
696 }
697
698 /* SQE test failure -- just complain about it */
699 if (txst0 & XE_TXST0_SQE_FAIL) {
700 device_printf(scp->dev, "SQE test failure\n");
701 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
702 scp->mibdata.dot3StatsSQETestErrors++;
703 }
704
705 /* Packet too long -- what happens to these */
706 if (rst0 & XE_RST0_LONG_PACKET) {
707 device_printf(scp->dev, "received giant packet\n");
708 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
709 scp->mibdata.dot3StatsFrameTooLongs++;
710 }
711
712 /* CRC error -- packet dropped */
713 if (rst0 & XE_RST0_CRC_ERROR) {
714 device_printf(scp->dev, "CRC error\n");
715 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
716 scp->mibdata.dot3StatsFCSErrors++;
717 }
718 }
719
720 static void
721 xe_rxintr(struct xe_softc *scp, uint8_t rst0)
722 {
723 struct ifnet *ifp;
724 uint8_t esr, rsr;
725
726 ifp = scp->ifp;
727
728 /* Handle received packet(s) */
729 while ((esr = XE_INB(XE_ESR)) & XE_ESR_FULL_PACKET_RX) {
730 rsr = XE_INB(XE_RSR);
731
732 DEVPRINTF(3, (scp->dev, "intr: ESR=0x%02x, RSR=0x%02x\n", esr,
733 rsr));
734
735 /* Make sure packet is a good one */
736 if (rsr & XE_RSR_RX_OK) {
737 struct ether_header *ehp;
738 struct mbuf *mbp;
739 uint16_t len;
740
741 len = XE_INW(XE_RBC) - ETHER_CRC_LEN;
742
743 DEVPRINTF(3, (scp->dev, "intr: receive length = %d\n",
744 len));
745
746 if (len == 0) {
747 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
748 continue;
749 }
750
751 /*
752 * Allocate mbuf to hold received packet. If
753 * the mbuf header isn't big enough, we attach
754 * an mbuf cluster to hold the packet. Note
755 * the +=2 to align the packet data on a
756 * 32-bit boundary, and the +3 to allow for
757 * the possibility of reading one more byte
758 * than the actual packet length (we always
759 * read 16-bit words). XXX - Surely there's a
760 * better way to do this alignment?
761 */
762 MGETHDR(mbp, M_NOWAIT, MT_DATA);
763 if (mbp == NULL) {
764 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
765 continue;
766 }
767
768 if (len + 3 > MHLEN) {
769 if (!(MCLGET(mbp, M_NOWAIT))) {
770 m_freem(mbp);
771 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
772 continue;
773 }
774 }
775
776 mbp->m_data += 2;
777 ehp = mtod(mbp, struct ether_header *);
778
779 /*
780 * Now get the packet in PIO mode, including
781 * the Ethernet header but omitting the
782 * trailing CRC.
783 */
784
785 /*
786 * Work around a bug in CE2 cards. There
787 * seems to be a problem with duplicated and
788 * extraneous bytes in the receive buffer, but
789 * without any real documentation for the CE2
790 * it's hard to tell for sure. XXX - Needs
791 * testing on CE2 hardware
792 */
793 if (scp->srev == 0) {
794 u_short rhs;
795
796 XE_SELECT_PAGE(5);
797 rhs = XE_INW(XE_RHSA);
798 XE_SELECT_PAGE(0);
799
800 rhs += 3; /* Skip control info */
801
802 if (rhs >= 0x8000)
803 rhs = 0;
804
805 if (rhs + len > 0x8000) {
806 int i;
807
808 for (i = 0; i < len; i++, rhs++) {
809 ((char *)ehp)[i] =
810 XE_INB(XE_EDP);
811 if (rhs == 0x8000) {
812 rhs = 0;
813 i--;
814 }
815 }
816 } else
817 bus_read_multi_2(scp->port_res, XE_EDP,
818 (uint16_t *)ehp, (len + 1) >> 1);
819 } else
820 bus_read_multi_2(scp->port_res, XE_EDP,
821 (uint16_t *)ehp, (len + 1) >> 1);
822
823 /* Deliver packet to upper layers */
824 mbp->m_pkthdr.rcvif = ifp;
825 mbp->m_pkthdr.len = mbp->m_len = len;
826 XE_UNLOCK(scp);
827 (*ifp->if_input)(ifp, mbp);
828 XE_LOCK(scp);
829 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
830
831 } else if (rsr & XE_RSR_ALIGN_ERROR) {
832 /* Packet alignment error -- drop packet */
833 device_printf(scp->dev, "alignment error\n");
834 scp->mibdata.dot3StatsAlignmentErrors++;
835 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
836 }
837
838 /* Skip to next packet, if there is one */
839 XE_OUTW(XE_DO, 0x8000);
840 }
841
842 /* Clear receiver overruns now we have some free buffer space */
843 if (rst0 & XE_RST0_RX_OVERRUN) {
844 DEVPRINTF(1, (scp->dev, "receive overrun\n"));
845 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
846 scp->mibdata.dot3StatsInternalMacReceiveErrors++;
847 XE_OUTB(XE_CR, XE_CR_CLEAR_OVERRUN);
848 }
849 }
850
851 static void
852 xe_intr(void *xscp)
853 {
854 struct xe_softc *scp = (struct xe_softc *) xscp;
855 struct ifnet *ifp;
856 uint8_t psr, isr, rst0, txst0, txst1;
857
858 ifp = scp->ifp;
859 XE_LOCK(scp);
860
861 /* Disable interrupts */
862 if (scp->mohawk)
863 XE_OUTB(XE_CR, 0);
864
865 /* Cache current register page */
866 psr = XE_INB(XE_PR);
867
868 /* Read ISR to see what caused this interrupt */
869 while ((isr = XE_INB(XE_ISR)) != 0) {
870
871 /* 0xff might mean the card is no longer around */
872 if (isr == 0xff) {
873 DEVPRINTF(3, (scp->dev,
874 "intr: interrupt received for missing card?\n"));
875 break;
876 }
877
878 /* Read other status registers */
879 XE_SELECT_PAGE(0x40);
880 rst0 = XE_INB(XE_RST0);
881 XE_OUTB(XE_RST0, 0);
882 txst0 = XE_INB(XE_TXST0);
883 txst1 = XE_INB(XE_TXST1);
884 XE_OUTB(XE_TXST0, 0);
885 XE_OUTB(XE_TXST1, 0);
886 XE_SELECT_PAGE(0);
887
888 DEVPRINTF(3, (scp->dev,
889 "intr: ISR=0x%02x, RST=0x%02x, TXT=0x%02x%02x\n", isr,
890 rst0, txst1, txst0));
891
892 if (isr & XE_ISR_TX_PACKET)
893 xe_txintr(scp, txst1);
894
895 if (isr & XE_ISR_MAC_INTR)
896 xe_macintr(scp, rst0, txst0, txst1);
897
898 xe_rxintr(scp, rst0);
899 }
900
901 /* Restore saved page */
902 XE_SELECT_PAGE(psr);
903
904 /* Re-enable interrupts */
905 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR);
906
907 XE_UNLOCK(scp);
908 }
909
910 /*
911 * Device timeout/watchdog routine. Called automatically if we queue a packet
912 * for transmission but don't get an interrupt within a specified timeout
913 * (usually 5 seconds). When this happens we assume the worst and reset the
914 * card.
915 */
916 static void
917 xe_watchdog(void *arg)
918 {
919 struct xe_softc *scp = arg;
920
921 XE_ASSERT_LOCKED(scp);
922
923 if (scp->tx_timeout && --scp->tx_timeout == 0) {
924 device_printf(scp->dev, "watchdog timeout: resetting card\n");
925 scp->tx_timeouts++;
926 if_inc_counter(scp->ifp, IFCOUNTER_OERRORS, scp->tx_queued);
927 xe_stop(scp);
928 xe_reset(scp);
929 xe_init_locked(scp);
930 }
931 callout_reset(&scp->wdog_timer, hz, xe_watchdog, scp);
932 }
933
934 /*
935 * Change media selection.
936 */
937 static int
938 xe_media_change(struct ifnet *ifp)
939 {
940 struct xe_softc *scp = ifp->if_softc;
941
942 DEVPRINTF(2, (scp->dev, "media_change\n"));
943
944 XE_LOCK(scp);
945 if (IFM_TYPE(scp->ifm->ifm_media) != IFM_ETHER) {
946 XE_UNLOCK(scp);
947 return(EINVAL);
948 }
949
950 /*
951 * Some card/media combos aren't always possible -- filter
952 * those out here.
953 */
954 if ((IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_AUTO ||
955 IFM_SUBTYPE(scp->ifm->ifm_media) == IFM_100_TX) && !scp->phy_ok) {
956 XE_UNLOCK(scp);
957 return (EINVAL);
958 }
959
960 xe_setmedia(scp);
961 XE_UNLOCK(scp);
962
963 return (0);
964 }
965
966 /*
967 * Return current media selection.
968 */
969 static void
970 xe_media_status(struct ifnet *ifp, struct ifmediareq *mrp)
971 {
972 struct xe_softc *scp = ifp->if_softc;
973
974 DEVPRINTF(3, (scp->dev, "media_status\n"));
975
976 /* XXX - This is clearly wrong. Will fix once I have CE2 working */
977 XE_LOCK(scp);
978 mrp->ifm_status = IFM_AVALID | IFM_ACTIVE;
979 mrp->ifm_active = ((struct xe_softc *)ifp->if_softc)->media;
980 XE_UNLOCK(scp);
981 }
982
983 /*
984 * Select active media.
985 */
986 static void
987 xe_setmedia(void *xscp)
988 {
989 struct xe_softc *scp = xscp;
990 uint16_t bmcr, bmsr, anar, lpar;
991
992 DEVPRINTF(2, (scp->dev, "setmedia\n"));
993
994 XE_ASSERT_LOCKED(scp);
995
996 /* Cancel any pending timeout */
997 callout_stop(&scp->media_timer);
998 xe_disable_intr(scp);
999
1000 /* Select media */
1001 scp->media = IFM_ETHER;
1002 switch (IFM_SUBTYPE(scp->ifm->ifm_media)) {
1003
1004 case IFM_AUTO: /* Autoselect media */
1005 scp->media = IFM_ETHER|IFM_AUTO;
1006
1007 /*
1008 * Autoselection is really awful. It goes something like this:
1009 *
1010 * Wait until the transmitter goes idle (2sec timeout).
1011 * Reset card
1012 * IF a 100Mbit PHY exists
1013 * Start NWAY autonegotiation (3.5sec timeout)
1014 * IF that succeeds
1015 * Select 100baseTX or 10baseT, whichever was detected
1016 * ELSE
1017 * Reset card
1018 * IF a 100Mbit PHY exists
1019 * Try to force a 100baseTX link (3sec timeout)
1020 * IF that succeeds
1021 * Select 100baseTX
1022 * ELSE
1023 * Disable the PHY
1024 * ENDIF
1025 * ENDIF
1026 * ENDIF
1027 * ENDIF
1028 * IF nothing selected so far
1029 * IF a 100Mbit PHY exists
1030 * Select 10baseT
1031 * ELSE
1032 * Select 10baseT or 10base2, whichever is connected
1033 * ENDIF
1034 * ENDIF
1035 */
1036 switch (scp->autoneg_status) {
1037 case XE_AUTONEG_NONE:
1038 DEVPRINTF(2, (scp->dev,
1039 "Waiting for idle transmitter\n"));
1040 scp->ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1041 scp->autoneg_status = XE_AUTONEG_WAITING;
1042 /* FALL THROUGH */
1043 case XE_AUTONEG_WAITING:
1044 if (scp->tx_queued != 0) {
1045 callout_reset(&scp->media_timer, hz / 2,
1046 xe_setmedia, scp);
1047 return;
1048 }
1049 if (scp->phy_ok) {
1050 DEVPRINTF(2, (scp->dev,
1051 "Starting autonegotiation\n"));
1052 bmcr = xe_phy_readreg(scp, PHY_BMCR);
1053 bmcr &= ~(PHY_BMCR_AUTONEGENBL);
1054 xe_phy_writereg(scp, PHY_BMCR, bmcr);
1055 anar = xe_phy_readreg(scp, PHY_ANAR);
1056 anar &= ~(PHY_ANAR_100BT4 |
1057 PHY_ANAR_100BTXFULL | PHY_ANAR_10BTFULL);
1058 anar |= PHY_ANAR_100BTXHALF | PHY_ANAR_10BTHALF;
1059 xe_phy_writereg(scp, PHY_ANAR, anar);
1060 bmcr |= PHY_BMCR_AUTONEGENBL |
1061 PHY_BMCR_AUTONEGRSTR;
1062 xe_phy_writereg(scp, PHY_BMCR, bmcr);
1063 scp->autoneg_status = XE_AUTONEG_STARTED;
1064 callout_reset(&scp->media_timer, hz * 7/2,
1065 xe_setmedia, scp);
1066 return;
1067 } else {
1068 scp->autoneg_status = XE_AUTONEG_FAIL;
1069 }
1070 break;
1071 case XE_AUTONEG_STARTED:
1072 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1073 lpar = xe_phy_readreg(scp, PHY_LPAR);
1074 if (bmsr & (PHY_BMSR_AUTONEGCOMP | PHY_BMSR_LINKSTAT)) {
1075 DEVPRINTF(2, (scp->dev,
1076 "Autonegotiation complete!\n"));
1077
1078 /*
1079 * XXX - Shouldn't have to do this,
1080 * but (on my hub at least) the
1081 * transmitter won't work after a
1082 * successful autoneg. So we see what
1083 * the negotiation result was and
1084 * force that mode. I'm sure there is
1085 * an easy fix for this.
1086 */
1087 if (lpar & PHY_LPAR_100BTXHALF) {
1088 xe_phy_writereg(scp, PHY_BMCR,
1089 PHY_BMCR_SPEEDSEL);
1090 XE_MII_DUMP(scp);
1091 XE_SELECT_PAGE(2);
1092 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1093 scp->media = IFM_ETHER | IFM_100_TX;
1094 scp->autoneg_status = XE_AUTONEG_NONE;
1095 } else {
1096 /*
1097 * XXX - Bit of a hack going
1098 * on in here. This is
1099 * derived from Ken Hughes
1100 * patch to the Linux driver
1101 * to make it work with 10Mbit
1102 * _autonegotiated_ links on
1103 * CE3B cards. What's a CE3B
1104 * and how's it differ from a
1105 * plain CE3? these are the
1106 * things we need to find out.
1107 */
1108 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1109 XE_SELECT_PAGE(2);
1110 /* BEGIN HACK */
1111 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1112 XE_SELECT_PAGE(0x42);
1113 XE_OUTB(XE_SWC1, 0x80);
1114 scp->media = IFM_ETHER | IFM_10_T;
1115 scp->autoneg_status = XE_AUTONEG_NONE;
1116 /* END HACK */
1117 #if 0
1118 /* Display PHY? */
1119 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);
1120 scp->autoneg_status = XE_AUTONEG_FAIL;
1121 #endif
1122 }
1123 } else {
1124 DEVPRINTF(2, (scp->dev,
1125 "Autonegotiation failed; trying 100baseTX\n"));
1126 XE_MII_DUMP(scp);
1127 if (scp->phy_ok) {
1128 xe_phy_writereg(scp, PHY_BMCR,
1129 PHY_BMCR_SPEEDSEL);
1130 scp->autoneg_status = XE_AUTONEG_100TX;
1131 callout_reset(&scp->media_timer, hz * 3,
1132 xe_setmedia, scp);
1133 return;
1134 } else {
1135 scp->autoneg_status = XE_AUTONEG_FAIL;
1136 }
1137 }
1138 break;
1139 case XE_AUTONEG_100TX:
1140 (void)xe_phy_readreg(scp, PHY_BMSR);
1141 bmsr = xe_phy_readreg(scp, PHY_BMSR);
1142 if (bmsr & PHY_BMSR_LINKSTAT) {
1143 DEVPRINTF(2, (scp->dev,
1144 "Got 100baseTX link!\n"));
1145 XE_MII_DUMP(scp);
1146 XE_SELECT_PAGE(2);
1147 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1148 scp->media = IFM_ETHER | IFM_100_TX;
1149 scp->autoneg_status = XE_AUTONEG_NONE;
1150 } else {
1151 DEVPRINTF(2, (scp->dev,
1152 "Autonegotiation failed; disabling PHY\n"));
1153 XE_MII_DUMP(scp);
1154 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1155 XE_SELECT_PAGE(2);
1156
1157 /* Disable PHY? */
1158 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);
1159 scp->autoneg_status = XE_AUTONEG_FAIL;
1160 }
1161 break;
1162 }
1163
1164 /*
1165 * If we got down here _and_ autoneg_status is
1166 * XE_AUTONEG_FAIL, then either autonegotiation
1167 * failed, or never got started to begin with. In
1168 * either case, select a suitable 10Mbit media and
1169 * hope it works. We don't need to reset the card
1170 * again, since it will have been done already by the
1171 * big switch above.
1172 */
1173 if (scp->autoneg_status == XE_AUTONEG_FAIL) {
1174 DEVPRINTF(2, (scp->dev, "Selecting 10baseX\n"));
1175 if (scp->mohawk) {
1176 XE_SELECT_PAGE(0x42);
1177 XE_OUTB(XE_SWC1, 0x80);
1178 scp->media = IFM_ETHER | IFM_10_T;
1179 scp->autoneg_status = XE_AUTONEG_NONE;
1180 } else {
1181 XE_SELECT_PAGE(4);
1182 XE_OUTB(XE_GPR0, 4);
1183 DELAY(50000);
1184 XE_SELECT_PAGE(0x42);
1185 XE_OUTB(XE_SWC1,
1186 (XE_INB(XE_ESR) & XE_ESR_MEDIA_SELECT) ?
1187 0x80 : 0xc0);
1188 scp->media = IFM_ETHER | ((XE_INB(XE_ESR) &
1189 XE_ESR_MEDIA_SELECT) ? IFM_10_T : IFM_10_2);
1190 scp->autoneg_status = XE_AUTONEG_NONE;
1191 }
1192 }
1193 break;
1194
1195 /*
1196 * If a specific media has been requested, we just reset the
1197 * card and select it (one small exception -- if 100baseTX is
1198 * requested but there is no PHY, we fall back to 10baseT
1199 * operation).
1200 */
1201 case IFM_100_TX: /* Force 100baseTX */
1202 if (scp->phy_ok) {
1203 DEVPRINTF(2, (scp->dev, "Selecting 100baseTX\n"));
1204 XE_SELECT_PAGE(0x42);
1205 XE_OUTB(XE_SWC1, 0);
1206 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_SPEEDSEL);
1207 XE_SELECT_PAGE(2);
1208 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | 0x08);
1209 scp->media |= IFM_100_TX;
1210 break;
1211 }
1212 /* FALLTHROUGH */
1213 case IFM_10_T: /* Force 10baseT */
1214 DEVPRINTF(2, (scp->dev, "Selecting 10baseT\n"));
1215 if (scp->phy_ok) {
1216 xe_phy_writereg(scp, PHY_BMCR, 0x0000);
1217 XE_SELECT_PAGE(2);
1218
1219 /* Disable PHY */
1220 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~0x08);
1221 }
1222 XE_SELECT_PAGE(0x42);
1223 XE_OUTB(XE_SWC1, 0x80);
1224 scp->media |= IFM_10_T;
1225 break;
1226 case IFM_10_2:
1227 DEVPRINTF(2, (scp->dev, "Selecting 10base2\n"));
1228 XE_SELECT_PAGE(0x42);
1229 XE_OUTB(XE_SWC1, 0xc0);
1230 scp->media |= IFM_10_2;
1231 break;
1232 }
1233
1234 /*
1235 * Finally, the LEDs are set to match whatever media was
1236 * chosen and the transmitter is unblocked.
1237 */
1238 DEVPRINTF(2, (scp->dev, "Setting LEDs\n"));
1239 XE_SELECT_PAGE(2);
1240 switch (IFM_SUBTYPE(scp->media)) {
1241 case IFM_100_TX:
1242 case IFM_10_T:
1243 XE_OUTB(XE_LED, 0x3b);
1244 if (scp->dingo)
1245 XE_OUTB(0x0b, 0x04); /* 100Mbit LED */
1246 break;
1247 case IFM_10_2:
1248 XE_OUTB(XE_LED, 0x3a);
1249 break;
1250 }
1251
1252 /* Restart output? */
1253 xe_enable_intr(scp);
1254 scp->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1255 xe_start_locked(scp->ifp);
1256 }
1257
1258 /*
1259 * Hard reset (power cycle) the card.
1260 */
1261 static void
1262 xe_reset(struct xe_softc *scp)
1263 {
1264
1265 DEVPRINTF(2, (scp->dev, "reset\n"));
1266
1267 XE_ASSERT_LOCKED(scp);
1268
1269 /* Power down */
1270 XE_SELECT_PAGE(4);
1271 XE_OUTB(XE_GPR1, 0);
1272 DELAY(40000);
1273
1274 /* Power up again */
1275 if (scp->mohawk)
1276 XE_OUTB(XE_GPR1, XE_GPR1_POWER_DOWN);
1277 else
1278 XE_OUTB(XE_GPR1, XE_GPR1_POWER_DOWN | XE_GPR1_AIC);
1279
1280 DELAY(40000);
1281 XE_SELECT_PAGE(0);
1282 }
1283
1284 /*
1285 * Take interface offline. This is done by powering down the device, which I
1286 * assume means just shutting down the transceiver and Ethernet logic. This
1287 * requires a _hard_ reset to recover from, as we need to power up again.
1288 */
1289 void
1290 xe_stop(struct xe_softc *scp)
1291 {
1292
1293 DEVPRINTF(2, (scp->dev, "stop\n"));
1294
1295 XE_ASSERT_LOCKED(scp);
1296
1297 /*
1298 * Shut off interrupts.
1299 */
1300 xe_disable_intr(scp);
1301
1302 /*
1303 * Power down.
1304 */
1305 XE_SELECT_PAGE(4);
1306 XE_OUTB(XE_GPR1, 0);
1307 XE_SELECT_PAGE(0);
1308 if (scp->mohawk) {
1309 /*
1310 * set GP1 and GP2 as outputs (bits 2 & 3)
1311 * set GP1 high to power on the ML6692 (bit 0)
1312 * set GP2 low to power on the 10Mhz chip (bit 1)
1313 */
1314 XE_SELECT_PAGE(4);
1315 XE_OUTB(XE_GPR0, XE_GPR0_GP2_SELECT | XE_GPR0_GP1_SELECT |
1316 XE_GPR0_GP1_OUT);
1317 }
1318
1319 /*
1320 * ~IFF_DRV_RUNNING == interface down.
1321 */
1322 scp->ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1323 scp->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1324 scp->tx_timeout = 0;
1325 callout_stop(&scp->wdog_timer);
1326 callout_stop(&scp->media_timer);
1327 }
1328
1329 /*
1330 * Enable interrupts from the card.
1331 */
1332 static void
1333 xe_enable_intr(struct xe_softc *scp)
1334 {
1335
1336 DEVPRINTF(2, (scp->dev, "enable_intr\n"));
1337
1338 XE_SELECT_PAGE(0);
1339 XE_OUTB(XE_CR, XE_CR_ENABLE_INTR); /* Enable interrupts */
1340 if (scp->modem && !scp->dingo) { /* This bit is just magic */
1341 if (!(XE_INB(0x10) & 0x01)) {
1342 XE_OUTB(0x10, 0x11); /* Unmask master int enable */
1343 }
1344 }
1345 }
1346
1347 /*
1348 * Disable interrupts from the card.
1349 */
1350 static void
1351 xe_disable_intr(struct xe_softc *scp)
1352 {
1353
1354 DEVPRINTF(2, (scp->dev, "disable_intr\n"));
1355
1356 XE_SELECT_PAGE(0);
1357 XE_OUTB(XE_CR, 0); /* Disable interrupts */
1358 if (scp->modem && !scp->dingo) { /* More magic */
1359 XE_OUTB(0x10, 0x10); /* Mask the master int enable */
1360 }
1361 }
1362
1363 /*
1364 * Set up multicast filter and promiscuous modes.
1365 */
1366 static void
1367 xe_set_multicast(struct xe_softc *scp)
1368 {
1369 struct ifnet *ifp;
1370 struct ifmultiaddr *maddr;
1371 unsigned count, i;
1372
1373 DEVPRINTF(2, (scp->dev, "set_multicast\n"));
1374
1375 ifp = scp->ifp;
1376 XE_SELECT_PAGE(0x42);
1377
1378 /* Handle PROMISC flag */
1379 if (ifp->if_flags & IFF_PROMISC) {
1380 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) | XE_SWC1_PROMISCUOUS);
1381 return;
1382 } else
1383 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~XE_SWC1_PROMISCUOUS);
1384
1385 /* Handle ALLMULTI flag */
1386 if (ifp->if_flags & IFF_ALLMULTI) {
1387 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) | XE_SWC1_ALLMULTI);
1388 return;
1389 } else
1390 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI);
1391
1392 /* Iterate over multicast address list */
1393 count = 0;
1394 if_maddr_rlock(ifp);
1395 TAILQ_FOREACH(maddr, &ifp->if_multiaddrs, ifma_link) {
1396 if (maddr->ifma_addr->sa_family != AF_LINK)
1397 continue;
1398
1399 count++;
1400
1401 if (count < 10)
1402 /*
1403 * First 9 use Individual Addresses for exact
1404 * matching.
1405 */
1406 xe_set_addr(scp,
1407 LLADDR((struct sockaddr_dl *)maddr->ifma_addr),
1408 count);
1409 else if (scp->mohawk)
1410 /* Use hash filter on Mohawk and Dingo */
1411 xe_mchash(scp,
1412 LLADDR((struct sockaddr_dl *)maddr->ifma_addr));
1413 else
1414 /* Nowhere else to put them on CE2 */
1415 break;
1416 }
1417 if_maddr_runlock(ifp);
1418
1419 DEVPRINTF(2, (scp->dev, "set_multicast: count = %u\n", count));
1420
1421 /* Now do some cleanup and enable multicast handling as needed */
1422 if (count == 0) {
1423 /* Disable all multicast handling */
1424 XE_SELECT_PAGE(0x42);
1425 XE_OUTB(XE_SWC1, XE_INB(XE_SWC1) &
1426 ~(XE_SWC1_IA_ENABLE | XE_SWC1_ALLMULTI));
1427 if (scp->mohawk) {
1428 XE_SELECT_PAGE(0x02);
1429 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1430 }
1431 } else if (count < 10) {
1432 /*
1433 * Full in any unused Individual Addresses with our
1434 * MAC address.
1435 */
1436 for (i = count + 1; i < 10; i++)
1437 xe_set_addr(scp, IF_LLADDR(scp->ifp), i);
1438
1439 /* Enable Individual Address matching only */
1440 XE_SELECT_PAGE(0x42);
1441 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI) |
1442 XE_SWC1_IA_ENABLE);
1443 if (scp->mohawk) {
1444 XE_SELECT_PAGE(0x02);
1445 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1446 }
1447 } else if (scp->mohawk) {
1448 /* Check whether hash table is full */
1449 XE_SELECT_PAGE(0x58);
1450 for (i = 0x08; i < 0x10; i++)
1451 if (XE_INB(i) != 0xff)
1452 break;
1453 if (i == 0x10) {
1454 /*
1455 * Hash table full - enable
1456 * promiscuous multicast matching
1457 */
1458 XE_SELECT_PAGE(0x42);
1459 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) &
1460 ~XE_SWC1_IA_ENABLE) | XE_SWC1_ALLMULTI);
1461 XE_SELECT_PAGE(0x02);
1462 XE_OUTB(XE_MSR, XE_INB(XE_MSR) & ~XE_MSR_HASH_TABLE);
1463 } else {
1464 /* Enable hash table and Individual Address matching */
1465 XE_SELECT_PAGE(0x42);
1466 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_ALLMULTI) |
1467 XE_SWC1_IA_ENABLE);
1468 XE_SELECT_PAGE(0x02);
1469 XE_OUTB(XE_MSR, XE_INB(XE_MSR) | XE_MSR_HASH_TABLE);
1470 }
1471 } else {
1472 /* Enable promiscuous multicast matching */
1473 XE_SELECT_PAGE(0x42);
1474 XE_OUTB(XE_SWC1, (XE_INB(XE_SWC1) & ~XE_SWC1_IA_ENABLE) |
1475 XE_SWC1_ALLMULTI);
1476 }
1477
1478 XE_SELECT_PAGE(0);
1479 }
1480
1481 /*
1482 * Copy the Ethernet multicast address in addr to the on-chip registers for
1483 * Individual Address idx. Assumes that addr is really a multicast address
1484 * and that idx > 0 (slot 0 is always used for the card MAC address).
1485 */
1486 static void
1487 xe_set_addr(struct xe_softc *scp, uint8_t* addr, unsigned idx)
1488 {
1489 uint8_t page, reg;
1490 unsigned i;
1491
1492 /*
1493 * Individual Addresses are stored in registers 8-F of pages
1494 * 0x50-0x57. IA1 therefore starts at register 0xE on page
1495 * 0x50. The expressions below compute the starting page and
1496 * register for any IA index > 0.
1497 */
1498 --idx;
1499 page = 0x50 + idx % 4 + idx / 4 * 3;
1500 reg = 0x0e - 2 * (idx % 4);
1501
1502 DEVPRINTF(3, (scp->dev,
1503 "set_addr: idx = %u, page = 0x%02x, reg = 0x%02x\n", idx + 1, page,
1504 reg));
1505
1506 /*
1507 * Copy the IA bytes. Note that the byte order is reversed
1508 * for Mohawk and Dingo wrt. CE2 hardware.
1509 */
1510 XE_SELECT_PAGE(page);
1511 for (i = 0; i < ETHER_ADDR_LEN; i++) {
1512 if (i > 0) {
1513 DPRINTF(3, (":%02x", addr[i]));
1514 } else {
1515 DEVPRINTF(3, (scp->dev, "set_addr: %02x", addr[0]));
1516 }
1517 XE_OUTB(reg, addr[scp->mohawk ? 5 - i : i]);
1518 if (++reg == 0x10) {
1519 reg = 0x08;
1520 XE_SELECT_PAGE(++page);
1521 }
1522 }
1523 DPRINTF(3, ("\n"));
1524 }
1525
1526 /*
1527 * Set the appropriate bit in the multicast hash table for the supplied
1528 * Ethernet multicast address addr. Assumes that addr is really a multicast
1529 * address.
1530 */
1531 static void
1532 xe_mchash(struct xe_softc* scp, const uint8_t *addr)
1533 {
1534 int bit;
1535 uint8_t byte, hash;
1536
1537 hash = ether_crc32_le(addr, ETHER_ADDR_LEN) & 0x3F;
1538
1539 /*
1540 * Top 3 bits of hash give register - 8, bottom 3 give bit
1541 * within register.
1542 */
1543 byte = hash >> 3 | 0x08;
1544 bit = 0x01 << (hash & 0x07);
1545
1546 DEVPRINTF(3, (scp->dev,
1547 "set_hash: hash = 0x%02x, byte = 0x%02x, bit = 0x%02x\n", hash,
1548 byte, bit));
1549
1550 XE_SELECT_PAGE(0x58);
1551 XE_OUTB(byte, XE_INB(byte) | bit);
1552 }
1553
1554 /*
1555 * Write an outgoing packet to the card using programmed I/O.
1556 */
1557 static int
1558 xe_pio_write_packet(struct xe_softc *scp, struct mbuf *mbp)
1559 {
1560 unsigned len, pad;
1561 unsigned char wantbyte;
1562 uint8_t *data;
1563 uint8_t savebyte[2];
1564
1565 /* Get total packet length */
1566 if (mbp->m_flags & M_PKTHDR)
1567 len = mbp->m_pkthdr.len;
1568 else {
1569 struct mbuf* mbp2 = mbp;
1570 for (len = 0; mbp2 != NULL;
1571 len += mbp2->m_len, mbp2 = mbp2->m_next);
1572 }
1573
1574 DEVPRINTF(3, (scp->dev, "pio_write_packet: len = %u\n", len));
1575
1576 /* Packets < minimum length may need to be padded out */
1577 pad = 0;
1578 if (len < scp->tx_min) {
1579 pad = scp->tx_min - len;
1580 len = scp->tx_min;
1581 }
1582
1583 /* Check transmit buffer space */
1584 XE_SELECT_PAGE(0);
1585 XE_OUTW(XE_TRS, len + 2); /* Only effective on rev. 1 CE2 cards */
1586 if ((XE_INW(XE_TSO) & 0x7fff) <= len + 2)
1587 return (1);
1588
1589 /* Send packet length to card */
1590 XE_OUTW(XE_EDP, len);
1591
1592 /*
1593 * Write packet to card using PIO (code stolen from the ed driver)
1594 */
1595 wantbyte = 0;
1596 while (mbp != NULL) {
1597 len = mbp->m_len;
1598 if (len > 0) {
1599 data = mtod(mbp, caddr_t);
1600 if (wantbyte) { /* Finish the last word */
1601 savebyte[1] = *data;
1602 XE_OUTW(XE_EDP, *(u_short *)savebyte);
1603 data++;
1604 len--;
1605 wantbyte = 0;
1606 }
1607 if (len > 1) { /* Output contiguous words */
1608 bus_write_multi_2(scp->port_res, XE_EDP,
1609 (uint16_t *)data, len >> 1);
1610 data += len & ~1;
1611 len &= 1;
1612 }
1613 if (len == 1) { /* Save last byte, if needed */
1614 savebyte[0] = *data;
1615 wantbyte = 1;
1616 }
1617 }
1618 mbp = mbp->m_next;
1619 }
1620
1621 /*
1622 * Send last byte of odd-length packets
1623 */
1624 if (wantbyte)
1625 XE_OUTB(XE_EDP, savebyte[0]);
1626
1627 /*
1628 * Can just tell CE3 cards to send; short packets will be
1629 * padded out with random cruft automatically. For CE2,
1630 * manually pad the packet with garbage; it will be sent when
1631 * the required number of bytes have been delivered to the
1632 * card.
1633 */
1634 if (scp->mohawk)
1635 XE_OUTB(XE_CR, XE_CR_TX_PACKET | XE_CR_RESTART_TX |
1636 XE_CR_ENABLE_INTR);
1637 else if (pad > 0) {
1638 if (pad & 0x01)
1639 XE_OUTB(XE_EDP, 0xaa);
1640 pad >>= 1;
1641 while (pad > 0) {
1642 XE_OUTW(XE_EDP, 0xdead);
1643 pad--;
1644 }
1645 }
1646
1647 return (0);
1648 }
1649
1650 /**************************************************************
1651 * *
1652 * M I I F U N C T I O N S *
1653 * *
1654 **************************************************************/
1655
1656 /*
1657 * Alternative MII/PHY handling code adapted from the xl driver. It doesn't
1658 * seem to work any better than the xirc2_ps stuff, but it's cleaner code.
1659 * XXX - this stuff shouldn't be here. It should all be abstracted off to
1660 * XXX - some kind of common MII-handling code, shared by all drivers. But
1661 * XXX - that's a whole other mission.
1662 */
1663 #define XE_MII_SET(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) | (x))
1664 #define XE_MII_CLR(x) XE_OUTB(XE_GPR2, (XE_INB(XE_GPR2) | 0x04) & ~(x))
1665
1666 /*
1667 * Sync the PHYs by setting data bit and strobing the clock 32 times.
1668 */
1669 static void
1670 xe_mii_sync(struct xe_softc *scp)
1671 {
1672 int i;
1673
1674 XE_SELECT_PAGE(2);
1675 XE_MII_SET(XE_MII_DIR|XE_MII_WRD);
1676
1677 for (i = 0; i < 32; i++) {
1678 XE_MII_SET(XE_MII_CLK);
1679 DELAY(1);
1680 XE_MII_CLR(XE_MII_CLK);
1681 DELAY(1);
1682 }
1683 }
1684
1685 /*
1686 * Look for a MII-compliant PHY. If we find one, reset it.
1687 */
1688 static int
1689 xe_mii_init(struct xe_softc *scp)
1690 {
1691 uint16_t status;
1692
1693 status = xe_phy_readreg(scp, PHY_BMSR);
1694 if ((status & 0xff00) != 0x7800) {
1695 DEVPRINTF(2, (scp->dev, "no PHY found, %0x\n", status));
1696 return (0);
1697 } else {
1698 DEVPRINTF(2, (scp->dev, "PHY OK!\n"));
1699
1700 /* Reset the PHY */
1701 xe_phy_writereg(scp, PHY_BMCR, PHY_BMCR_RESET);
1702 DELAY(500);
1703 while(xe_phy_readreg(scp, PHY_BMCR) & PHY_BMCR_RESET)
1704 ; /* nothing */
1705 XE_MII_DUMP(scp);
1706 return (1);
1707 }
1708 }
1709
1710 /*
1711 * Clock a series of bits through the MII.
1712 */
1713 static void
1714 xe_mii_send(struct xe_softc *scp, uint32_t bits, int cnt)
1715 {
1716 int i;
1717
1718 XE_SELECT_PAGE(2);
1719 XE_MII_CLR(XE_MII_CLK);
1720
1721 for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
1722 if (bits & i) {
1723 XE_MII_SET(XE_MII_WRD);
1724 } else {
1725 XE_MII_CLR(XE_MII_WRD);
1726 }
1727 DELAY(1);
1728 XE_MII_CLR(XE_MII_CLK);
1729 DELAY(1);
1730 XE_MII_SET(XE_MII_CLK);
1731 }
1732 }
1733
1734 /*
1735 * Read an PHY register through the MII.
1736 */
1737 static int
1738 xe_mii_readreg(struct xe_softc *scp, struct xe_mii_frame *frame)
1739 {
1740 int i, ack;
1741
1742 XE_ASSERT_LOCKED(scp);
1743
1744 /*
1745 * Set up frame for RX.
1746 */
1747 frame->mii_stdelim = XE_MII_STARTDELIM;
1748 frame->mii_opcode = XE_MII_READOP;
1749 frame->mii_turnaround = 0;
1750 frame->mii_data = 0;
1751
1752 XE_SELECT_PAGE(2);
1753 XE_OUTB(XE_GPR2, 0);
1754
1755 /*
1756 * Turn on data xmit.
1757 */
1758 XE_MII_SET(XE_MII_DIR);
1759
1760 xe_mii_sync(scp);
1761
1762 /*
1763 * Send command/address info.
1764 */
1765 xe_mii_send(scp, frame->mii_stdelim, 2);
1766 xe_mii_send(scp, frame->mii_opcode, 2);
1767 xe_mii_send(scp, frame->mii_phyaddr, 5);
1768 xe_mii_send(scp, frame->mii_regaddr, 5);
1769
1770 /* Idle bit */
1771 XE_MII_CLR((XE_MII_CLK|XE_MII_WRD));
1772 DELAY(1);
1773 XE_MII_SET(XE_MII_CLK);
1774 DELAY(1);
1775
1776 /* Turn off xmit. */
1777 XE_MII_CLR(XE_MII_DIR);
1778
1779 /* Check for ack */
1780 XE_MII_CLR(XE_MII_CLK);
1781 DELAY(1);
1782 ack = XE_INB(XE_GPR2) & XE_MII_RDD;
1783 XE_MII_SET(XE_MII_CLK);
1784 DELAY(1);
1785
1786 /*
1787 * Now try reading data bits. If the ack failed, we still
1788 * need to clock through 16 cycles to keep the PHY(s) in sync.
1789 */
1790 if (ack) {
1791 for(i = 0; i < 16; i++) {
1792 XE_MII_CLR(XE_MII_CLK);
1793 DELAY(1);
1794 XE_MII_SET(XE_MII_CLK);
1795 DELAY(1);
1796 }
1797 goto fail;
1798 }
1799
1800 for (i = 0x8000; i; i >>= 1) {
1801 XE_MII_CLR(XE_MII_CLK);
1802 DELAY(1);
1803 if (!ack) {
1804 if (XE_INB(XE_GPR2) & XE_MII_RDD)
1805 frame->mii_data |= i;
1806 DELAY(1);
1807 }
1808 XE_MII_SET(XE_MII_CLK);
1809 DELAY(1);
1810 }
1811
1812 fail:
1813 XE_MII_CLR(XE_MII_CLK);
1814 DELAY(1);
1815 XE_MII_SET(XE_MII_CLK);
1816 DELAY(1);
1817
1818 if (ack)
1819 return(1);
1820 return(0);
1821 }
1822
1823 /*
1824 * Write to a PHY register through the MII.
1825 */
1826 static int
1827 xe_mii_writereg(struct xe_softc *scp, struct xe_mii_frame *frame)
1828 {
1829
1830 XE_ASSERT_LOCKED(scp);
1831
1832 /*
1833 * Set up frame for TX.
1834 */
1835 frame->mii_stdelim = XE_MII_STARTDELIM;
1836 frame->mii_opcode = XE_MII_WRITEOP;
1837 frame->mii_turnaround = XE_MII_TURNAROUND;
1838
1839 XE_SELECT_PAGE(2);
1840
1841 /*
1842 * Turn on data output.
1843 */
1844 XE_MII_SET(XE_MII_DIR);
1845
1846 xe_mii_sync(scp);
1847
1848 xe_mii_send(scp, frame->mii_stdelim, 2);
1849 xe_mii_send(scp, frame->mii_opcode, 2);
1850 xe_mii_send(scp, frame->mii_phyaddr, 5);
1851 xe_mii_send(scp, frame->mii_regaddr, 5);
1852 xe_mii_send(scp, frame->mii_turnaround, 2);
1853 xe_mii_send(scp, frame->mii_data, 16);
1854
1855 /* Idle bit. */
1856 XE_MII_SET(XE_MII_CLK);
1857 DELAY(1);
1858 XE_MII_CLR(XE_MII_CLK);
1859 DELAY(1);
1860
1861 /*
1862 * Turn off xmit.
1863 */
1864 XE_MII_CLR(XE_MII_DIR);
1865
1866 return(0);
1867 }
1868
1869 /*
1870 * Read a register from the PHY.
1871 */
1872 static uint16_t
1873 xe_phy_readreg(struct xe_softc *scp, uint16_t reg)
1874 {
1875 struct xe_mii_frame frame;
1876
1877 bzero((char *)&frame, sizeof(frame));
1878
1879 frame.mii_phyaddr = 0;
1880 frame.mii_regaddr = reg;
1881 xe_mii_readreg(scp, &frame);
1882
1883 return (frame.mii_data);
1884 }
1885
1886 /*
1887 * Write to a PHY register.
1888 */
1889 static void
1890 xe_phy_writereg(struct xe_softc *scp, uint16_t reg, uint16_t data)
1891 {
1892 struct xe_mii_frame frame;
1893
1894 bzero((char *)&frame, sizeof(frame));
1895
1896 frame.mii_phyaddr = 0;
1897 frame.mii_regaddr = reg;
1898 frame.mii_data = data;
1899 xe_mii_writereg(scp, &frame);
1900 }
1901
1902 /*
1903 * A bit of debugging code.
1904 */
1905 static void
1906 xe_mii_dump(struct xe_softc *scp)
1907 {
1908 int i;
1909
1910 device_printf(scp->dev, "MII registers: ");
1911 for (i = 0; i < 2; i++) {
1912 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
1913 }
1914 for (i = 4; i < 7; i++) {
1915 printf(" %d:%04x", i, xe_phy_readreg(scp, i));
1916 }
1917 printf("\n");
1918 }
1919
1920 #if 0
1921 void
1922 xe_reg_dump(struct xe_softc *scp)
1923 {
1924 int page, i;
1925
1926 device_printf(scp->dev, "Common registers: ");
1927 for (i = 0; i < 8; i++) {
1928 printf(" %2.2x", XE_INB(i));
1929 }
1930 printf("\n");
1931
1932 for (page = 0; page <= 8; page++) {
1933 device_printf(scp->dev, "Register page %2.2x: ", page);
1934 XE_SELECT_PAGE(page);
1935 for (i = 8; i < 16; i++) {
1936 printf(" %2.2x", XE_INB(i));
1937 }
1938 printf("\n");
1939 }
1940
1941 for (page = 0x10; page < 0x5f; page++) {
1942 if ((page >= 0x11 && page <= 0x3f) ||
1943 (page == 0x41) ||
1944 (page >= 0x43 && page <= 0x4f) ||
1945 (page >= 0x59))
1946 continue;
1947 device_printf(scp->dev, "Register page %2.2x: ", page);
1948 XE_SELECT_PAGE(page);
1949 for (i = 8; i < 16; i++) {
1950 printf(" %2.2x", XE_INB(i));
1951 }
1952 printf("\n");
1953 }
1954 }
1955 #endif
1956
1957 int
1958 xe_activate(device_t dev)
1959 {
1960 struct xe_softc *sc = device_get_softc(dev);
1961 int start, i;
1962
1963 DEVPRINTF(2, (dev, "activate\n"));
1964
1965 if (!sc->modem) {
1966 sc->port_rid = 0; /* 0 is managed by pccard */
1967 sc->port_res = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT,
1968 &sc->port_rid, 16, RF_ACTIVE);
1969 } else if (sc->dingo) {
1970 /*
1971 * Find a 16 byte aligned ioport for the card.
1972 */
1973 DEVPRINTF(1, (dev, "Finding an aligned port for RealPort\n"));
1974 sc->port_rid = 1; /* 0 is managed by pccard */
1975 start = 0x100;
1976 do {
1977 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
1978 &sc->port_rid, start, 0x3ff, 16, RF_ACTIVE);
1979 if (sc->port_res == NULL)
1980 break;
1981 if ((rman_get_start(sc->port_res) & 0xf) == 0)
1982 break;
1983 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
1984 sc->port_res);
1985 start = (rman_get_start(sc->port_res) + 15) & ~0xf;
1986 } while (1);
1987 DEVPRINTF(1, (dev, "RealPort port 0x%0jx, size 0x%0jx\n",
1988 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
1989 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)));
1990 } else if (sc->ce2) {
1991 /*
1992 * Find contiguous I/O port for the Ethernet function
1993 * on CEM2 and CEM3 cards. We allocate window 0
1994 * wherever pccard has decided it should be, then find
1995 * an available window adjacent to it for the second
1996 * function. Not sure that both windows are actually
1997 * needed.
1998 */
1999 DEVPRINTF(1, (dev, "Finding I/O port for CEM2/CEM3\n"));
2000 sc->ce2_port_rid = 0; /* 0 is managed by pccard */
2001 sc->ce2_port_res = bus_alloc_resource_anywhere(dev,
2002 SYS_RES_IOPORT, &sc->ce2_port_rid, 8, RF_ACTIVE);
2003 if (sc->ce2_port_res == NULL) {
2004 DEVPRINTF(1, (dev,
2005 "Cannot allocate I/O port for modem\n"));
2006 xe_deactivate(dev);
2007 return (ENOMEM);
2008 }
2009
2010 sc->port_rid = 1;
2011 start = bus_get_resource_start(dev, SYS_RES_IOPORT,
2012 sc->ce2_port_rid);
2013 for (i = 0; i < 2; i++) {
2014 start += (i == 0 ? 8 : -24);
2015 sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT,
2016 &sc->port_rid, start, start + 15, 16, RF_ACTIVE);
2017 if (sc->port_res == NULL)
2018 continue;
2019 if (bus_get_resource_start(dev, SYS_RES_IOPORT,
2020 sc->port_rid) == start)
2021 break;
2022
2023 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
2024 sc->port_res);
2025 sc->port_res = NULL;
2026 }
2027 DEVPRINTF(1, (dev, "CEM2/CEM3 port 0x%0jx, size 0x%0jx\n",
2028 bus_get_resource_start(dev, SYS_RES_IOPORT, sc->port_rid),
2029 bus_get_resource_count(dev, SYS_RES_IOPORT, sc->port_rid)));
2030 }
2031
2032 if (!sc->port_res) {
2033 DEVPRINTF(1, (dev, "Cannot allocate ioport\n"));
2034 xe_deactivate(dev);
2035 return (ENOMEM);
2036 }
2037
2038 sc->irq_rid = 0;
2039 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
2040 RF_ACTIVE);
2041 if (sc->irq_res == NULL) {
2042 DEVPRINTF(1, (dev, "Cannot allocate irq\n"));
2043 xe_deactivate(dev);
2044 return (ENOMEM);
2045 }
2046
2047 return (0);
2048 }
2049
2050 void
2051 xe_deactivate(device_t dev)
2052 {
2053 struct xe_softc *sc = device_get_softc(dev);
2054
2055 DEVPRINTF(2, (dev, "deactivate\n"));
2056 if (sc->intrhand)
2057 bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
2058 sc->intrhand = NULL;
2059 if (sc->port_res)
2060 bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid,
2061 sc->port_res);
2062 sc->port_res = NULL;
2063 if (sc->ce2_port_res)
2064 bus_release_resource(dev, SYS_RES_IOPORT, sc->ce2_port_rid,
2065 sc->ce2_port_res);
2066 sc->ce2_port_res = NULL;
2067 if (sc->irq_res)
2068 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,
2069 sc->irq_res);
2070 sc->irq_res = NULL;
2071 if (sc->ifp)
2072 if_free(sc->ifp);
2073 sc->ifp = NULL;
2074 }
Cache object: 4db313596d90c40cc6cf0633d5b7b1e3
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